[lm-sensors] Help with new supermicro fan control

Todd Nine todd at spidertracks.co.nz
Wed May 13 07:11:57 CEST 2009


Hi all,
   I'm attempting to install lm_sensors in to CentOs 5.3 x86_64 on a  
Super Micro

http://www.supermicro.com/products/motherboard/Xeon1333/5400/X7DWN+.cfm

I've tried both the latest source 3.1, as well as the rpm from yum  
which is v 2.10.7 with libsensors v 2.10.7.  I'd prefer to use the RPM  
version that comes from yum if possible.  Whenever I run the sensors  
command, I always receive the following output.

w83627hf-isa-0290
Adapter: ISA adapter
VCore 1:   +3.36 V  (min =  +0.00 V, max =  +4.08 V)
VCore 2:   +3.31 V  (min =  +0.00 V, max =  +4.08 V)
+3.3V:     +3.30 V  (min =  +2.82 V, max =  +3.79 V)
+5V:       +5.16 V  (min =  +0.46 V, max =  +0.08 V)       ALARM
+12V:     +11.73 V  (min =  +6.69 V, max =  +7.30 V)       ALARM
-12V:      +0.96 V  (min = -14.50 V, max = -10.63 V)       ALARM
-5V:       +1.99 V  (min =  -5.20 V, max =  +1.99 V)
V5SB:      +5.64 V  (min =  +5.16 V, max =  +5.00 V)       ALARM
VBat:      +0.00 V  (min =  +0.35 V, max =  +0.16 V)       ALARM
fan1:        0 RPM  (min = 5273 RPM, div = 128)              ALARM
fan2:        0 RPM  (min = 6250 RPM, div = 2)              ALARM
fan3:        0 RPM  (min = 5672 RPM, div = 2)              ALARM
temp1:       -30°C  (high =   +33°C, hyst =    +8°C)   sensor =  
thermistor
temp2:     -34.0°C  (high =   +80°C, hyst =   +75°C)   sensor =  
thermistor
temp3:     -34.0°C  (high =   +80°C, hyst =   +75°C)   sensor =  
thermistor
vid:      +0.000 V  (VRM Version 8.2)
alarms:
beep_enable:
           Sound alarm enabled


As you can see none of my fans are working.  I've read the wiki on fan  
control and divisors, but I don't seem to have any config options.   
Here is the config I have in etc/sensors.conf for my board.  I know  
that my fans must report data, as windows detects the rpms and I have  
4 pins on my fan connectors.  I'm also able to detect my temperature  
and fan speed in BIOS.  I'm sure it's a simple config I've missed, but  
I'm new to lm-sensors so any help would be appreciated.

Thanks,
Todd

chip "w83782d-*" "w83627hf-*"

# Same as above for w83781d except that in5 and in6 are computed  
differently.
# Rather than an internal inverting op amp, the 82d/83s use standard  
positive
# inputs and the negative voltages are level shifted by a 3.6V  
reference.
# The math is convoluted, so we hope that your motherboard
# uses the recommended resistor values.

     label in0 "VCore 1"
     label in1 "VCore 2"
     label in2 "+3.3V"
     label in3 "+5V"
     label in4 "+12V"
     label in5 "-12V"
     label in6 "-5V"
     label in7 "V5SB"
     label in8 "VBat"

# Abit BP6 motherboard has a few differences. VCore1 and VCore2 are  
the core
# voltages of the two processors. Vtt is memory bus termination  
resistors
# voltage.
#    label in1 "Vtt"
#    label in8 "VCore2"

     compute in3 ((6.8/10)+1)*@ ,  @/((6.8/10)+1)
     compute in4 ((28/10)+1)*@  ,  @/((28/10)+1)
     compute in5 (5.14 * @) - 14.91  ,  (@ + 14.91) / 5.14
     compute in6 (3.14 * @) -  7.71  ,  (@ +  7.71) / 3.14
     compute in7 ((6.8/10)+1)*@ ,  @/((6.8/10)+1)

# adjust this if your vid is wrong; see doc/vid



todd
SENIOR SOFTWARE ENGINEER

todd nine | spidertracks ltd |  117a the square
po box 5203 | palmerston north 4441 | new zealand
P: +64 6 353 3395 | M: +64 21
E: todd at spidertracks.co.nz W: www.spidertracks.com

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